Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Muscovite from
Alvarrões Mine, Gonçalo, Guarda, Guarda, Portugal


Locality type:Mine
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Comments:António Martins photo: http://www.mindat.org/photo-563412.html
Habit:masses; unconspicuous spherical aggregates to 5mm (on quartz)
Colour:pearl-white, yellowish-white
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Quartz4
Tourmaline1
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Alvarrões Mine, Gonçalo, Guarda, Guarda, Portugal
Data Identifiers
Mindat Occurrence Record ID:1010349
Long-form Identifier:1:3:1010349:4
GUID (UUID V4):0
Nearest other occurrences of Muscovite
1.7km (1.0 miles) ⓘGonçalo Sul C 70 Mine, Gonçalo, Guarda, Guarda, Portugal
2.2km (1.4 miles) ⓘVela Sudoeste quarry, Vela, Guarda, Guarda, Portugal
3.1km (1.9 miles) ⓘCabris Mine, União de freguesias de Corujeira e Trinta, Guarda, Guarda, Portugal
6.5km (4.1 miles) ⓘUnnamed pegmatite quarry, Maçainhas, Belmonte, Castelo Branco, Portugal
9.5km (5.9 miles) ⓘBendada Mines, Bendada, Sabugal, Guarda, Portugal
16.7km (10.4 miles) ⓘSítio do Castelo Mine, Folgosinho, Gouveia, Guarda, Portugal
20.6km (12.8 miles) ⓘMelo e Nabais, Gouveia, Guarda, Portugal
24.2km (15.0 miles) ⓘRoto-Bote quarry, Vila Franca da Serra, Gouveia, Guarda, Portugal
31.8km (19.8 miles) ⓘBom Sucesso No. 4 quarry, Tavares (Chãs; Várzea e Travanca), Mangualde, Viseu, Portugal
32.1km (19.9 miles) ⓘVila Seca Mine, Vila Seca, Tavares (Chãs; Várzea e Travanca), Mangualde, Viseu, Portugal
References
António Martins collection
Fuchs, A.; Fuchs, R. (2014): Rosaroter Elbait aus der Serra de Estrela, Portugal. Lapis 39 (3), 12-20.
 
and/or  
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